CocoaCryptoHashing.m

/*
 * CocoaCryptoHashing.m
 * CocoaCryptoHashing
 */

#import "CocoaCryptoHashing.h"

#if TARGET_OS_MAC && (TARGET_OS_IPHONE || MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4)

#define COMMON_DIGEST_FOR_OPENSSL
#import <CommonCrypto/CommonDigest.h>

#define MD5(data, len, md)          CC_MD5(data, len, md)
#define SHA1(data, len, md)         CC_SHA1(data, len, md)

#else

#import <openssl/md5.h>
#import <openssl/sha.h>

#endif

@implementation NSString (CocoaCryptoHashing)

- (NSData *)md5Hash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO] md5Hash];
}

- (NSString *)md5HexHash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO] md5HexHash];
}

- (NSData *)sha1Hash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO] sha1Hash];
}

- (NSString *)sha1HexHash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO] sha1HexHash];
}

@end

@implementation NSData (CocoaCryptoHashing)

- (NSString *)md5HexHash
{
	unsigned char digest[MD5_DIGEST_LENGTH];
	char finaldigest[2*MD5_DIGEST_LENGTH];
	int i;
	
	MD5([self bytes],[self length],digest);
	for(i=0;i<MD5_DIGEST_LENGTH;i++) sprintf(finaldigest+i*2,"%02x",digest[i]);
	
	return [NSString stringWithCString:finaldigest length:2*MD5_DIGEST_LENGTH];
}

- (NSData *)md5Hash
{
	unsigned char digest[MD5_DIGEST_LENGTH];
	
	MD5([self bytes],[self length],digest);
	
	return [NSData dataWithBytes:&digest length:MD5_DIGEST_LENGTH];
}

- (NSString *)sha1HexHash
{
	unsigned char digest[SHA_DIGEST_LENGTH];
	char finaldigest[2*SHA_DIGEST_LENGTH];
	int i;
	
	SHA1([self bytes],[self length],digest);
	for(i=0;i<SHA_DIGEST_LENGTH;i++) sprintf(finaldigest+i*2,"%02x",digest[i]);
	
	return [NSString stringWithCString:finaldigest length:2*SHA_DIGEST_LENGTH];
}

- (NSData *)sha1Hash
{
	unsigned char digest[SHA_DIGEST_LENGTH];
	
	SHA1([self bytes],[self length],digest);
	
	return [NSData dataWithBytes:&digest length:SHA_DIGEST_LENGTH];
}

@end